Moreau Paul-Antoine, Toninelli Ermes, Morris Peter A, Aspden Reuben S, Gregory Thomas, Spalding Gabriel, Boyd Robert W, Padgett Miles J
Opt Express. 2018 Mar 19;26(6):7528-7536. doi: 10.1364/OE.26.007528.
Quantum ghost imaging uses photon pairs produced from parametric downconversion to enable an alternative method of image acquisition. Information from either one of the photons does not yield an image, but an image can be obtained by harnessing the correlations between them. Here we present an examination of the resolution limits of such ghost imaging systems. In both conventional imaging and quantum ghost imaging the resolution of the image is limited by the point-spread function of the optics associated with the spatially resolving detector. However, whereas in conventional imaging systems the resolution is limited only by this point spread function, in ghost imaging we show that the resolution can be further degraded by reducing the strength of the spatial correlations inherent in the downconversion process.
量子鬼成像利用参量下转换产生的光子对来实现一种替代的图像采集方法。来自任一光子的信息都无法产生图像，但通过利用它们之间的相关性可以获得图像。在此，我们对这种鬼成像系统的分辨率极限进行了研究。在传统成像和量子鬼成像中，图像的分辨率都受到与空间分辨探测器相关的光学系统的点扩散函数的限制。然而，在传统成像系统中，分辨率仅受此点扩散函数的限制，而在鬼成像中，我们表明通过降低下转换过程中固有的空间相关性强度，分辨率会进一步降低。
